include/wx/platform.h

   1 /**
   2 * Name:        wx/platform.h
   3 * Purpose:     define the OS and compiler identification macros
   4 * Author:      Vadim Zeitlin
   5 * Modified by:
   6 * Created:     29.10.01 (extracted from wx/defs.h)
   7 * RCS-ID:      $Id$
   8 * Copyright:   (c) 1997-2001 Vadim Zeitlin
   9 * Licence:     wxWindows licence
  10 */
  11
  12 /* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */
  13
  14 #ifndef _WX_PLATFORM_H_
  15 #define _WX_PLATFORM_H_
  16
  17
  18 /*
  19     Codewarrior doesn't define any Windows symbols until some headers
  20     are included
  21 */
  22 #ifdef __MWERKS__
  23 #   include <stddef.h>
  24
  25 #  if !defined(__WXMAC__) && !defined(__WINDOWS__) && !defined(WIN32) && !defined(_WIN32_WCE)
  26 #    define __PALMOS__ 0x05000000
  27 #  endif
  28 #endif
  29
  30 /*
  31     WXOSX targets
  32     __WXOSX_MAC__ means Mac OS X, non embedded
  33     __WXOSX_IPHONE__ means OS X iPhone
  34 */
  35
  36 /*
  37     Normally all of __WXOSX_XXX__, __WXOSX__ and __WXMAC__ are defined by
  38     configure but ensure that we also define them if configure was not used for
  39     whatever reason.
  40
  41     The primare symbol remains __WXOSX_XXX__ one, __WXOSX__ exists to allow
  42     checking for any OS X port (Carbon and Cocoa) and __WXMAC__ is an old name
  43     for it.
  44  */
  45 #if defined(__WXOSX_CARBON__) || defined(__WXOSX_COCOA__) || defined(__WXOSX_IPHONE__)
  46 #   ifndef __WXOSX__
  47 #       define __WXOSX__ 1
  48 #   endif
  49 #   ifndef __WXMAC__
  50 #       define __WXMAC__ 1
  51 #   endif
  52 #endif
  53
  54 #ifdef __WXOSX__
  55 /* setup precise defines according to sdk used */
  56 #   include <TargetConditionals.h>
  57 #   if defined(__WXOSX_IPHONE__)
  58 #       if !( defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE )
  59 #           error "incorrect SDK for an iPhone build"
  60 #       endif
  61 #   elif defined(__WXOSX_CARBON__) || defined(__WXOSX_COCOA__)
  62 #       if !( defined(TARGET_OS_MAC) && TARGET_OS_MAC )
  63 #           error "incorrect SDK for a Mac OS X build"
  64 #       endif
  65 #       define __WXOSX_MAC__ 1
  66 #   else
  67 #       error "one of __WXOSX_IPHONE__, __WXOSX_CARBON__ or __WXOSX_COCOA__ must be defined"
  68 #   endif
  69 #endif
  70
  71 #ifdef __WXOSX_MAC__
  72 #    if defined(__MACH__)
  73 #        include <AvailabilityMacros.h>
  74 #        ifndef MAC_OS_X_VERSION_10_4
  75 #           define MAC_OS_X_VERSION_10_4 1040
  76 #        endif
  77 #        ifndef MAC_OS_X_VERSION_10_5
  78 #           define MAC_OS_X_VERSION_10_5 1050
  79 #        endif
  80 #        ifndef MAC_OS_X_VERSION_10_6
  81 #           define MAC_OS_X_VERSION_10_6 1060
  82 #        endif
  83 #    else
  84 #        error "only mach-o configurations are supported"
  85 #    endif
  86 #endif
  87
  88 /*
  89     __WXOSX_OR_COCOA__ is a common define to wxOSX (Carbon or Cocoa) and wxCocoa ports under OS X.
  90
  91     DO NOT use this define in base library code.  Although wxMac has its own
  92     private base library (and thus __WXOSX_OR_COCOA__,__WXMAC__ and related defines are
  93     valid there), wxCocoa shares its library with other ports like wxGTK and wxX11.
  94
  95     To keep wx authors from screwing this up, only enable __WXOSX_OR_COCOA__ for wxCocoa when
  96     not compiling the base library.  We determine this by first checking if
  97     wxUSE_BASE is not defined.  If it is not defined, then we're not buildling
  98     the base library, and possibly not building wx at all (but actually building
  99     user code that's using wx). If it is defined then we must check to make sure
 100     it is not true.  If it is true, we're building base.
 101
 102     If you want it in the common darwin base library then use __DARWIN__.  You
 103     can use any Darwin-available libraries like CoreFoundation but please avoid
 104     using OS X libraries like Carbon or CoreServices.
 105
 106  */
 107 #if defined(__WXOSX__) || (defined(__WXCOCOA__) && (!defined(wxUSE_BASE) || !wxUSE_BASE))
 108 #   define __WXOSX_OR_COCOA__ 1
 109 #endif
 110
 111 #ifdef __WXOSX_OR_COCOA__
 112 #    ifdef __WXMAC_XCODE__
 113 #        include <unistd.h>
 114 #        include <TargetConditionals.h>
 115 #        include <AvailabilityMacros.h>
 116 #        include "wx/osx/config_xcode.h"
 117 #    endif
 118 #endif
 119 /*
 120    first define Windows symbols if they're not defined on the command line: we
 121    can autodetect everything we need if _WIN32 is defined
 122  */
 123 #if defined(__CYGWIN__) && defined(__WINDOWS__)
 124 #    ifndef __WXMSW__
 125 #        define __WXMSW__
 126 #    endif
 127 #endif
 128
 129 #if defined(__PALMOS__)
 130 #   if __PALMOS__ == 0x06000000
 131 #       define __WXPALMOS6__ 1
 132 #   endif
 133 #   if __PALMOS__ == 0x05000000
 134 #       define __WXPALMOS5__ 1
 135 #   endif
 136 #   ifndef __WXPALMOS__
 137 #       define __WXPALMOS__ 1
 138 #   endif
 139 #   ifdef __WXMSW__
 140 #       undef __WXMSW__
 141 #   endif
 142 #   ifdef __WINDOWS__
 143 #       undef __WINDOWS__
 144 #   endif
 145 #   ifdef __WIN32__
 146 #       undef __WIN32__
 147 #   endif
 148 #   ifdef WIN32
 149 #       undef WIN32
 150 #   endif
 151 #   ifdef _WIN32
 152 #       undef _WIN32
 153 #   endif
 154 #endif
 155
 156 #if defined(_WIN64)
 157 #    ifndef _WIN32
 158         /*
 159             a lot of code (mistakenly) uses #ifdef _WIN32 to either test for
 160             Windows or to test for !__WIN16__, so we must define _WIN32 for
 161             Win64 as well to ensure that the existing code continues to work.
 162          */
 163 #       define _WIN32
 164 #   endif /* !_WIN32 */
 165
 166 #   ifndef __WIN64__
 167 #       define __WIN64__
 168 #   endif /* !__WIN64__ */
 169 #endif /* _WIN64 */
 170
 171 #if (defined(_WIN32) || defined(WIN32) || defined(__NT__) || defined(__WXWINCE__)) \
 172     && !defined(__WXMOTIF__) && !defined(__WXGTK__) && !defined(__WXX11__)
 173 #    ifndef __WXMSW__
 174 #        define __WXMSW__
 175 #    endif
 176 #endif /* Win32 */
 177
 178 #if defined(__WXMSW__)
 179 #   if !defined(__WINDOWS__)
 180 #       define __WINDOWS__
 181 #   endif
 182
 183 #   ifndef _WIN32
 184 #        define _WIN32
 185 #   endif
 186
 187 #   ifndef WIN32
 188 #        define WIN32
 189 #   endif
 190
 191 #   ifndef __WIN32__
 192 #        define __WIN32__
 193 #   endif
 194 #endif /* __WXMSW__ */
 195
 196 /* detect MS SmartPhone */
 197 #if defined( WIN32_PLATFORM_WFSP )
 198 #   ifndef __SMARTPHONE__
 199 #       define __SMARTPHONE__
 200 #   endif
 201 #   ifndef __WXWINCE__
 202 #       define __WXWINCE__
 203 #   endif
 204 #endif
 205
 206 /* detect PocketPC */
 207 #if defined( WIN32_PLATFORM_PSPC )
 208 #   ifndef __POCKETPC__
 209 #       define __POCKETPC__
 210 #   endif
 211 #   ifndef __WXWINCE__
 212 #       define __WXWINCE__
 213 #   endif
 214 #endif
 215
 216 /* detect Standard WinCE SDK */
 217 #if defined( WCE_PLATFORM_STANDARDSDK )
 218 #   ifndef __WINCE_STANDARDSDK__
 219 #       define __WINCE_STANDARDSDK__
 220 #   endif
 221 #   ifndef __WXWINCE__
 222 #       define __WXWINCE__
 223 #   endif
 224 #endif
 225
 226 #if defined(_WIN32_WCE) && !defined(WIN32_PLATFORM_WFSP) && !defined(WIN32_PLATFORM_PSPC)
 227 #   if (_WIN32_WCE >= 400)
 228 #       ifndef __WINCE_NET__
 229 #           define __WINCE_NET__
 230 #       endif
 231 #   elif (_WIN32_WCE >= 200)
 232 #       ifndef __HANDHELDPC__
 233 #           define __HANDHELDPC__
 234 #       endif
 235 #   endif
 236 #   ifndef __WXWINCE__
 237 #       define __WXWINCE__
 238 #   endif
 239 #endif
 240
 241 #if defined(__WXWINCE__) && defined(_MSC_VER) && (_MSC_VER == 1201)
 242     #define __EVC4__
 243 #endif
 244
 245 #if defined(__POCKETPC__) || defined(__SMARTPHONE__) || defined(__WXGPE__)
 246 #   define __WXHANDHELD__
 247 #endif
 248
 249 /*
 250    Include wx/setup.h for the Unix platform defines generated by configure and
 251    the library compilation options
 252
 253    Note that it must be included before defining hardware symbols below as they
 254    could be already defined by configure
 255  */
 256 #include "wx/setup.h"
 257
 258 #ifdef __GCCXML__
 259     /*
 260         we're using gccxml to create an XML representation of the entire
 261         wxWidgets interface; use a special setup_gccxml.h file to fix some
 262         of the stuff #defined by the real setup.h
 263     */
 264     #include "wx/setup_gccxml.h"
 265 #endif
 266
 267
 268 /*
 269    Hardware platform detection.
 270
 271    VC++ defines _M_xxx symbols.
 272  */
 273 #if defined(_M_IX86) || defined(i386) || defined(__i386) || defined(__i386__)
 274     #ifndef __INTEL__
 275         #define __INTEL__
 276     #endif
 277 #endif /* x86 */
 278
 279 #if defined(_M_IA64)
 280     #ifndef __IA64__
 281         #define __IA64__
 282     #endif
 283 #endif /* ia64 */
 284
 285 #if defined(_M_MPPC) || defined(__PPC__) || defined(__ppc__)
 286     #ifndef __POWERPC__
 287         #define __POWERPC__
 288     #endif
 289 #endif /* alpha */
 290
 291 #if defined(_M_ALPHA) || defined(__AXP__)
 292     #ifndef __ALPHA__
 293         #define __ALPHA__
 294     #endif
 295 #endif /* alpha */
 296
 297
 298 /*
 299    adjust the Unicode setting: wxUSE_UNICODE should be defined as 0 or 1
 300    and is used by wxWidgets, _UNICODE and/or UNICODE may be defined or used by
 301    the system headers so bring these settings in sync
 302  */
 303
 304 /* set wxUSE_UNICODE to 1 if UNICODE or _UNICODE is defined */
 305 #if defined(_UNICODE) || defined(UNICODE)
 306 #   undef wxUSE_UNICODE
 307 #   define wxUSE_UNICODE 1
 308 #else /* !UNICODE */
 309 #   ifndef wxUSE_UNICODE
 310 #       define wxUSE_UNICODE 0
 311 #   endif
 312 #endif /* UNICODE/!UNICODE */
 313
 314 /* and vice versa: define UNICODE and _UNICODE if wxUSE_UNICODE is 1 */
 315 #if wxUSE_UNICODE
 316 #   ifndef _UNICODE
 317 #       define _UNICODE
 318 #   endif
 319 #   ifndef UNICODE
 320 #       define UNICODE
 321 #   endif
 322 #endif /* wxUSE_UNICODE */
 323
 324 #if defined( __MWERKS__ ) && !defined(__INTEL__)
 325 /* otherwise MSL headers bring in WIN32 dependant APIs */
 326 #undef UNICODE
 327 #endif
 328
 329
 330 /*
 331    test for old versions of Borland C, normally need at least 5.82, Turbo
 332    explorer, available for free at http://www.turboexplorer.com/downloads
 333 */
 334
 335
 336 /*
 337     Older versions of Borland C have some compiler bugs that need
 338     workarounds. Mostly pertains to the free command line compiler 5.5.1.
 339 */
 340 #if defined(__BORLANDC__) && (__BORLANDC__ <= 0x551)
 341     /*
 342         The Borland free compiler is unable to handle overloaded enum
 343         comparisons under certain conditions e.g. when any class has a
 344         conversion ctor for an integral type and there's an overload to
 345         compare between an integral type and that class type.
 346     */
 347 #   define wxCOMPILER_NO_OVERLOAD_ON_ENUM
 348
 349     /*
 350         This is needed to overcome bugs in 5.5.1 STL, linking errors will
 351         result if it is not defined.
 352      */
 353 #   define _RWSTD_COMPILE_INSTANTIATE
 354
 355     /*
 356         Preprocessor in older Borland compilers have major problems
 357         concatenating with ##. Specifically, if the string operands being
 358         concatenated have special meaning (e.g L"str", 123i64 etc)
 359         then ## will not concatenate the operands correctly.
 360
 361         As a workaround, define wxPREPEND* and wxAPPEND* without using
 362         wxCONCAT_HELPER.
 363     */
 364 #   define wxCOMPILER_BROKEN_CONCAT_OPER
 365 #endif /* __BORLANDC__ */
 366
 367 /*
 368    Define Watcom-specific macros.
 369 */
 370 #ifndef __WATCOMC__
 371 #   define wxWATCOM_VERSION(major,minor) 0
 372 #   define wxCHECK_WATCOM_VERSION(major,minor) 0
 373 #   define wxONLY_WATCOM_EARLIER_THAN(major,minor) 0
 374 #   define WX_WATCOM_ONLY_CODE( x )
 375 #else
 376 #   if __WATCOMC__ < 1200
 377 #       error "Only Open Watcom is supported in this release"
 378 #   endif
 379
 380 #   define wxWATCOM_VERSION(major,minor) ( major * 100 + minor * 10 + 1100 )
 381 #   define wxCHECK_WATCOM_VERSION(major,minor) ( __WATCOMC__ >= wxWATCOM_VERSION(major,minor) )
 382 #   define wxONLY_WATCOM_EARLIER_THAN(major,minor) ( __WATCOMC__ < wxWATCOM_VERSION(major,minor) )
 383 #   define WX_WATCOM_ONLY_CODE( x )  x
 384 #endif
 385
 386 /*
 387    OS: first of all, test for MS-DOS platform. We must do this before testing
 388        for Unix, because DJGPP compiler defines __unix__ under MS-DOS
 389  */
 390 #if defined(__GO32__) || defined(__DJGPP__) || defined(__DOS__)
 391 #    ifndef __DOS__
 392 #        define __DOS__
 393 #    endif
 394     /* size_t is the same as unsigned int for Watcom 11 compiler, */
 395     /* so define it if it hadn't been done by configure yet */
 396 #    if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG)
 397 #        ifdef __WATCOMC__
 398 #            define wxSIZE_T_IS_UINT
 399 #        endif
 400 #        ifdef __DJGPP__
 401 #            define wxSIZE_T_IS_ULONG
 402 #        endif
 403 #    endif
 404
 405 /*
 406    OS: then test for generic Unix defines, then for particular flavours and
 407        finally for Unix-like systems
 408        Mac OS X matches this case (__MACH__), prior Mac OS do not.
 409  */
 410 #elif defined(__UNIX__) || defined(__unix) || defined(__unix__) || \
 411       defined(____SVR4____) || defined(__LINUX__) || defined(__sgi) || \
 412       defined(__hpux) || defined(sun) || defined(__SUN__) || defined(_AIX) || \
 413       defined(__EMX__) || defined(__VMS) || defined(__BEOS__) || defined(__MACH__)
 414
 415 #    define __UNIX_LIKE__
 416
 417     /* Helps SGI compilation, apparently */
 418 #    ifdef __SGI__
 419 #        ifdef __GNUG__
 420 #            define __need_wchar_t
 421 #        else /* !gcc */
 422             /*
 423                Note I use the term __SGI_CC__ for both cc and CC, its not a good
 424                idea to mix gcc and cc/CC, the name mangling is different
 425              */
 426 #            define __SGI_CC__
 427 #        endif /* gcc/!gcc */
 428
 429         /* system headers use this symbol and not __cplusplus in some places */
 430 #       ifndef _LANGUAGE_C_PLUS_PLUS
 431 #           define _LANGUAGE_C_PLUS_PLUS
 432 #       endif
 433 #    endif  /* SGI */
 434
 435 #    if defined(__SUNPRO_CC)
 436 #       ifndef __SUNCC__
 437 #           define __SUNCC__ __SUNPRO_CC
 438 #       endif /* Sun CC */
 439 #    endif /* Sun CC */
 440
 441 #    ifdef __EMX__
 442 #        define OS2EMX_PLAIN_CHAR
 443 #    endif
 444 #    if defined(__INNOTEK_LIBC__)
 445         /* Ensure visibility of strnlen declaration */
 446 #        define _GNU_SOURCE
 447 #    endif
 448
 449     /* define __HPUX__ for HP-UX where standard macro is __hpux */
 450 #    if defined(__hpux) && !defined(__HPUX__)
 451 #        define __HPUX__
 452 #    endif /* HP-UX */
 453
 454 #    if defined(__CYGWIN__) || defined(__WINE__)
 455 #        if !defined(wxSIZE_T_IS_UINT)
 456 #            define wxSIZE_T_IS_UINT
 457 #        endif
 458 #    endif
 459
 460     /*  All of these should already be defined by including configure-
 461         generated setup.h but we wish to support Xcode compilation without
 462         requiring the user to define these himself.
 463      */
 464 #    if defined(__APPLE__) && defined(__MACH__)
 465 #        ifndef __UNIX__
 466 #            define __UNIX__ 1
 467 #        endif
 468 #        ifndef __BSD__
 469 #            define __BSD__ 1
 470 #        endif
 471         /*  __DARWIN__ is our own define to mean OS X or pure Darwin */
 472 #        ifndef __DARWIN__
 473 #            define __DARWIN__ 1
 474 #        endif
 475         /*  NOTE: TARGET_CARBON is actually a 0/1 and must be 1 for OS X */
 476 #        ifndef TARGET_CARBON
 477 #            define TARGET_CARBON 1
 478 #        endif
 479         /* OS X uses unsigned long size_t for both ILP32 and LP64 modes. */
 480 #        if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG)
 481 #            define wxSIZE_T_IS_ULONG
 482 #        endif
 483 #    endif
 484
 485 /*
 486    OS: Classic Mac OS
 487  */
 488 #elif defined(applec) || \
 489       defined(THINK_C) || \
 490       (defined(__MWERKS__) && !defined(__INTEL__))
 491       /* MacOS */
 492 #    if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG)
 493 #        define wxSIZE_T_IS_ULONG
 494 #    endif
 495
 496 /*
 497    OS: OS/2
 498  */
 499 #elif defined(__OS2__)
 500
 501     /* wxOS2 vs. non wxOS2 ports on OS2 platform */
 502 #    if !defined(__WXMOTIF__) && !defined(__WXGTK__) && !defined(__WXX11__)
 503 #        ifndef __WXPM__
 504 #            define __WXPM__
 505 #        endif
 506 #    endif
 507
 508 #    if defined(__IBMCPP__)
 509 #        define __VISAGEAVER__ __IBMCPP__
 510 #    endif
 511
 512     /* Place other OS/2 compiler environment defines here */
 513 #    if defined(__VISAGECPP__)
 514         /* VisualAge is the only thing that understands _Optlink */
 515 #        define LINKAGEMODE _Optlink
 516 #    endif
 517 #    define wxSIZE_T_IS_UINT
 518
 519 /*
 520    OS: Palm OS
 521  */
 522 #elif defined(__PALMOS__)
 523 #    ifdef __WIN32__
 524 #        error "__WIN32__ should not be defined for PalmOS"
 525 #    endif
 526 #    ifdef __WINDOWS__
 527 #        error "__WINDOWS__ should not be defined for PalmOS"
 528 #    endif
 529 #    ifdef __WXMSW__
 530 #        error "__WXMSW__ should not be defined for PalmOS"
 531 #    endif
 532
 533 /*
 534    OS: Otherwise it must be Windows
 535  */
 536 #else   /* Windows */
 537 #    ifndef __WINDOWS__
 538 #        define __WINDOWS__
 539 #    endif  /* Windows */
 540
 541     /* to be changed for Win64! */
 542 #    ifndef __WIN32__
 543 #        error "__WIN32__ should be defined for Win32 and Win64, Win16 is not supported"
 544 #    endif
 545
 546     /*
 547        define another standard symbol for Microsoft Visual C++: the standard
 548        one (_MSC_VER) is also defined by Metrowerks compiler
 549      */
 550 #    if defined(_MSC_VER) && !defined(__MWERKS__)
 551 #        define __VISUALC__ _MSC_VER
 552
 553     /*
 554        define special symbols for different VC version instead of writing tests
 555        for magic numbers such as 1200, 1300 &c repeatedly
 556      */
 557 #   if __VISUALC__ < 1100
 558 #       error "This Visual C++ version is too old and not supported any longer."
 559 #   elif __VISUALC__ < 1200
 560 #       define __VISUALC5__
 561 #   elif __VISUALC__ < 1300
 562 #       define __VISUALC6__
 563 #   elif __VISUALC__ < 1400
 564 #       define __VISUALC7__
 565 #   elif __VISUALC__ < 1500
 566 #       define __VISUALC8__
 567 #   elif __VISUALC__ < 1600
 568 #       define __VISUALC9__
 569 #   elif __VISUALC__ < 1700
 570 #       define __VISUALC10__
 571 #   else
 572 #       pragma message("Please update wx/platform.h to recognize this VC++ version")
 573 #   endif
 574
 575 #    elif defined(__BCPLUSPLUS__) && !defined(__BORLANDC__)
 576 #        define __BORLANDC__
 577 #    elif defined(__WATCOMC__)
 578 #    elif defined(__SC__)
 579 #        define __SYMANTECC__
 580 #    endif  /* compiler */
 581
 582     /* size_t is the same as unsigned int for all Windows compilers we know, */
 583     /* so define it if it hadn't been done by configure yet */
 584 #    if !defined(wxSIZE_T_IS_UINT) && !defined(wxSIZE_T_IS_ULONG) && !defined(__WIN64__)
 585 #        define wxSIZE_T_IS_UINT
 586 #    endif
 587 #endif  /* OS */
 588
 589 /*
 590    if we're on a Unix system but didn't use configure (so that setup.h didn't
 591    define __UNIX__), do define __UNIX__ now
 592  */
 593 #if !defined(__UNIX__) && defined(__UNIX_LIKE__)
 594 #    define __UNIX__
 595 #endif /* Unix */
 596
 597 #if defined(__WXMOTIF__) || defined(__WXX11__)
 598 #    define __X__
 599 #endif
 600
 601 #ifdef __SC__
 602 #    ifdef __DMC__
 603 #         define __DIGITALMARS__
 604 #    else
 605 #         define __SYMANTEC__
 606 #    endif
 607 #endif
 608
 609 #ifdef __INTEL_COMPILER
 610 #   define __INTELC__
 611 #endif
 612
 613 /*
 614    We get "Large Files (ILP32) not supported in strict ANSI mode." #error
 615    from HP-UX standard headers when compiling with g++ without this:
 616  */
 617 #if defined(__HPUX__) && !defined(__STDC_EXT__)
 618 #   define __STDC_EXT__ 1
 619 #endif
 620
 621 /* Force linking against required libraries under Windows: */
 622 #ifdef __WXWINCE__
 623 #   include "wx/msw/wince/libraries.h"
 624 #elif defined __WINDOWS__
 625 #   include "wx/msw/libraries.h"
 626 #endif
 627
 628 /*
 629    This macro can be used to test the gcc version and can be used like this:
 630
 631 #    if wxCHECK_GCC_VERSION(3, 1)
 632         ... we have gcc 3.1 or later ...
 633 #    else
 634         ... no gcc at all or gcc < 3.1 ...
 635 #    endif
 636 */
 637 #if defined(__GNUC__) && defined(__GNUC_MINOR__)
 638     #define wxCHECK_GCC_VERSION( major, minor ) \
 639         ( ( __GNUC__ > (major) ) \
 640             || ( __GNUC__ == (major) && __GNUC_MINOR__ >= (minor) ) )
 641 #else
 642     #define wxCHECK_GCC_VERSION( major, minor ) 0
 643 #endif
 644
 645 #if defined(__BORLANDC__) || (defined(__GNUC__) && __GNUC__ < 3)
 646 #define wxNEEDS_CHARPP
 647 #endif
 648
 649 /*
 650    This macro can be used to test the Visual C++ version.
 651 */
 652 #ifndef __VISUALC__
 653 #   define wxVISUALC_VERSION(major) 0
 654 #   define wxCHECK_VISUALC_VERSION(major) 0
 655 #else
 656 #   define wxVISUALC_VERSION(major) ( (6 + major) * 100 )
 657 #   define wxCHECK_VISUALC_VERSION(major) ( __VISUALC__ >= wxVISUALC_VERSION(major) )
 658 #endif
 659
 660 /*
 661    This macro can be used to check that the version of mingw32 compiler is
 662    at least maj.min
 663  */
 664 #if ( defined( __GNUWIN32__ ) || defined( __MINGW32__ ) || \
 665     ( defined( __CYGWIN__ ) && defined( __WINDOWS__ ) ) || \
 666       wxCHECK_WATCOM_VERSION(1,0) ) && \
 667     !defined(__DOS__) && \
 668     !defined(__WXPM__) && \
 669     !defined(__WXMOTIF__) && \
 670     !defined(__WXGTK__) && \
 671     !defined(__WXX11__) && \
 672     !defined(__WXPALMOS__)
 673 #    include "wx/msw/gccpriv.h"
 674 #else
 675 #    undef wxCHECK_W32API_VERSION
 676 #    define wxCHECK_W32API_VERSION(maj, min) (0)
 677 #    undef wxCHECK_MINGW32_VERSION
 678 #    define wxCHECK_MINGW32_VERSION(maj, min) (0)
 679 #endif
 680
 681 /**
 682     This is similar to wxCHECK_GCC_VERSION but for Sun CC compiler.
 683  */
 684 #ifdef __SUNCC__
 685     /*
 686        __SUNCC__ is 0xVRP where V is major version, R release and P patch level
 687      */
 688     #define wxCHECK_SUNCC_VERSION(maj, min) (__SUNCC__ >= (((maj)<<8) | ((min)<<4)))
 689 #else
 690     #define wxCHECK_SUNCC_VERSION(maj, min) (0)
 691 #endif
 692
 693 /*
 694     Handle Darwin gcc universal compilation.  Don't do this in an Apple-
 695     specific case since no sane compiler should be defining either
 696     __BIG_ENDIAN__ or __LITTLE_ENDIAN__ unless it really is generating
 697     code that will be hosted on a machine with the appropriate endianness.
 698     If a compiler defines neither, assume the user or configure set
 699     WORDS_BIGENDIAN appropriately.
 700  */
 701 #if defined(__BIG_ENDIAN__)
 702 #    undef WORDS_BIGENDIAN
 703 #    define WORDS_BIGENDIAN 1
 704 #elif defined(__LITTLE_ENDIAN__)
 705 #    undef WORDS_BIGENDIAN
 706 #elif defined(__WXMAC__) && !defined(WORDS_BIGENDIAN)
 707 /*  According to Stefan even ancient Mac compilers defined __BIG_ENDIAN__ */
 708 #    warning "Compiling wxMac with probably wrong endianness"
 709 #endif
 710 /* also the 32/64 bit universal builds must be handled accordingly */
 711 #ifdef __DARWIN__
 712 #    ifdef __LP64__
 713 #        undef SIZEOF_VOID_P
 714 #        undef SIZEOF_LONG
 715 #        undef SIZEOF_SIZE_T
 716 #        define SIZEOF_VOID_P 8
 717 #        define SIZEOF_LONG 8
 718 #        define SIZEOF_SIZE_T 8
 719 #    else
 720 #        undef SIZEOF_VOID_P
 721 #        undef SIZEOF_LONG
 722 #        undef SIZEOF_SIZE_T
 723 #        define SIZEOF_VOID_P 4
 724 #        define SIZEOF_LONG 4
 725 #        define SIZEOF_SIZE_T 4
 726 #    endif
 727 #endif
 728 /*
 729    check the consistency of the settings in setup.h: note that this must be
 730    done after setting wxUSE_UNICODE correctly as it is used in wx/chkconf.h
 731    and after defining the compiler macros which are used in it too
 732  */
 733 #include "wx/chkconf.h"
 734
 735
 736 /*
 737    some compilers don't support iostream.h any longer, while some of theme
 738    are not updated with <iostream> yet, so override the users setting here
 739    in such case.
 740  */
 741 #if defined(_MSC_VER) && (_MSC_VER >= 1310)
 742 #    undef wxUSE_IOSTREAMH
 743 #    define wxUSE_IOSTREAMH 0
 744 #elif defined(__DMC__) || defined(__WATCOMC__)
 745 #    undef wxUSE_IOSTREAMH
 746 #    define wxUSE_IOSTREAMH 1
 747 #elif defined(__MINGW32__)
 748 #    undef wxUSE_IOSTREAMH
 749 #    define wxUSE_IOSTREAMH 0
 750 #endif /* compilers with/without iostream.h */
 751
 752 /*
 753    old C++ headers (like <iostream.h>) declare classes in the global namespace
 754    while the new, standard ones (like <iostream>) do it in std:: namespace,
 755    unless it's an old gcc version.
 756
 757    using this macro allows constuctions like "wxSTD iostream" to work in
 758    either case
 759  */
 760 #if !wxUSE_IOSTREAMH && (!defined(__GNUC__) || ( __GNUC__ > 2 ) || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95))
 761 #    define wxSTD std::
 762 #else
 763 #    define wxSTD
 764 #endif
 765
 766 /* On OpenVMS with the most recent HP C++ compiler some function (i.e. wscanf)
 767  * are only available in the std-namespace. (BUG???)
 768  */
 769 #if defined(  __VMS ) && (__DECCXX_VER >= 70100000) && !defined(__STD_CFRONT) && !defined( __NONAMESPACE_STD )
 770 # define wxVMS_USE_STD std::
 771 #else
 772 # define wxVMS_USE_STD
 773 #endif
 774
 775 #ifdef __VMS
 776 #define XtDisplay XTDISPLAY
 777 #ifdef __WXMOTIF__
 778 #define XtParent XTPARENT
 779 #define XtScreen XTSCREEN
 780 #define XtWindow XTWINDOW
 781 #endif
 782 #endif
 783
 784 /* Choose which method we will use for updating menus
 785  * - in OnIdle, or when we receive a wxEVT_MENU_OPEN event.
 786  * Presently, only Windows and GTK+ support wxEVT_MENU_OPEN.
 787  */
 788 #ifndef wxUSE_IDLEMENUUPDATES
 789 #    if (defined(__WXMSW__) || defined(__WXGTK__)) && !defined(__WXUNIVERSAL__)
 790 #        define wxUSE_IDLEMENUUPDATES 0
 791 #    else
 792 #        define wxUSE_IDLEMENUUPDATES 1
 793 #    endif
 794 #endif
 795
 796 /*
 797  * Define symbols that are not yet in
 798  * configure or possibly some setup.h files.
 799  * They will need to be added.
 800  */
 801
 802 #ifndef wxUSE_FILECONFIG
 803 #    if wxUSE_CONFIG && wxUSE_TEXTFILE
 804 #        define wxUSE_FILECONFIG 1
 805 #    else
 806 #        define wxUSE_FILECONFIG 0
 807 #    endif
 808 #endif
 809
 810 #ifndef wxUSE_HOTKEY
 811 #    define wxUSE_HOTKEY 0
 812 #endif
 813
 814 #if !defined(wxUSE_WXDIB) && defined(__WXMSW__)
 815 #    define wxUSE_WXDIB 1
 816 #endif
 817
 818 /*
 819     We need AvailabilityMacros.h for ifdefing out things that don't exist on
 820     OSX 10.2 and lower
 821     FIXME:  We need a better way to detect for 10.3 then including a system header
 822 */
 823 #ifdef __DARWIN__
 824     #include <AvailabilityMacros.h>
 825 #endif
 826
 827 #if defined (__WXPALMOS__)
 828 #include "wx/palmos/missing.h"
 829 #endif // __WXPALMOS__
 830
 831 #if !defined (__WXPALMOS5__)
 832 #define POSSEC_APPBASE
 833 #define POSSEC_ARCHIVE
 834 #define POSSEC_CLNTDATA
 835 #define POSSEC_CMDLINE
 836 #define POSSEC_CONFIG
 837 #define POSSEC_DATETIME
 838 #define POSSEC_DATETIME2
 839 #define POSSEC_DATSTRM
 840 #define POSSEC_DIRCMN
 841 #define POSSEC_DYNARRAY
 842 #define POSSEC_DYNLIB
 843 #define POSSEC_DYNLOAD
 844 #define POSSEC_ENCCONV
 845 #define POSSEC_EXTENDED
 846 #define POSSEC_FFILE
 847 #define POSSEC_FILE
 848 #define POSSEC_FILECONF
 849 #define POSSEC_FILEFN
 850 #endif // __WXPALMOS5__
 851
 852 /*
 853     Optionally supported C++ features.
 854  */
 855
 856 /*
 857     RTTI: if it is disabled in build/msw/makefile.* then this symbol will
 858     already be defined but it's also possible to do it from configure (with
 859     g++) or by editing project files with MSVC so test for it here too.
 860  */
 861 #ifndef wxNO_RTTI
 862     /*
 863         Only 4.3 defines __GXX_RTTI by default so its absence is not an
 864         indication of disabled RTTI with the previous versions.
 865      */
 866 #   if wxCHECK_GCC_VERSION(4, 3)
 867 #       ifndef __GXX_RTTI
 868 #           define wxNO_RTTI
 869 #       endif
 870 #   elif defined(_MSC_VER)
 871 #       ifndef _CPPRTTI
 872 #           define wxNO_RTTI
 873 #       endif
 874 #   endif
 875 #endif // wxNO_RTTI
 876
 877 #endif /* _WX_PLATFORM_H_ */